IDL Problem Code 110 with alias logical-and

Want to disable me? Check out the configuration guide to learn more.

Warning Problem

This is a "problem" that gets reported to let users know how that behavior might not match what they expect.

When IDL's compile options are set to idl2, idl3, or logical_predicate, it changes the way that logical operations are handled.

This warning let's you know that you should use && instead of and with logical comparisons in if, case, or switch statements.

compile_opt idl2

if a and b then print, 'True!
   ; ^^^ warning appears here

To correct, use && instead

compile_opt idl2

if a && b then print, 'True!
   ; ^^ no warning